Binding-clamp.



No. 781,599. PATENTBD JAN. 31, 1905. J. D. HAGGARD,

BINDING CLAMP.

APPLICATION FILED rm. 1?, 1904.

Patented January 31, 1905.

UNITED STATES IATENT FFICE.

JOHN I). HAGG-ARD, OF CHICAGO, ILLINOIS, ASSIGNOR TO HAGC-ARD & MARCUSSON COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

BINDING-CLAMP.

SPECIFICATION forming part of Letters Patent No. 781,599, dated January 31, 1905. Application filed February 17, 1904. Serial No. 193,984.

To 111/ ll'hont it WMLZ/ concern/.-

Be it known that I, JOHN D. Haeeaan, a citizen of the United States, residing at Chicago, in the county of Cook and State of lilinois, have invented new and useful Improvements in Binding-Clamps, of which the following is a specification.

This invention relates to improvements in a binding-clamp for fabric edges, and is more especially intended for woven-wire fabric used in the manufacture of mattresses, and has for its object to provide a device of this character in which the different woven strands are uniformly and firmly held in place, so that the fabric will not be unevenly drawn out of shape no matter how much greater the pressure may be on one part than on another.

In practical use the binding-clamp is secured to the respective head and foot ends of a mattress and then properly fastened to the end rails of a bed-bottom.

In the drawings, Figure l is a transverse section of a metal strip from which is formed the binding-clamp proper. Fig. 2 is a siniilar view showing one edge of the binder-strip bent around at right angles and parallel with the web part. Fig. 3 is a view showing the opposite edge folded under upon itself and a loose locking-strip in place. Fig. I is a view 0 showing the first step in binding the ends of the fabric. Fig. 5 a view showing the operation complete, and Fig. 6 is a modification.

A may represent a binding-clam p composed of a strip of metal which folds longitudinally and will be of proper dimensions as to length, width, and thickness in accordance with the particular application and use of the device. In the operation of imparting the desired form to the clamp the inner edge adjacent to 4 the fabric to be bound is bent around to form the right-angle part 7 and the part 8, parallel with the web of the clamp, in providing a longitudinal locking-recess 9 for the reception of the flattened edge of the fabric, as shown in Figs. I and 5. The part 10 of the opposite or outer edge is bent under and flattened against the web in forming a double wall thickness, Figs. 3 and at, and then bent under again after the edge of the fabric is in- 15 therebetween, so that the outer half of the serted, as shown in Fig. 0. A separable looking or binding strip 11 has its inner edge 12 loosely inserted in the recess 9. The free edge 13 stops short of the turned-under edge of the main binding-strip and leaves a space binder-clamp may be again folded under after the edge of the fabric is inserted in completing the operation of binding, as shown in Fig.

The main binding member A and the locking member 11 are shown in their assembled relation, Fig. 3, to receive the folded-in edge of the fabric B. As shown in Fig. I, the edge of the fabric has been inserted by passing the same under the locking member 11 in an outward direction, then bending the same upward at right angles and then backward be tween the upper side of locking member 11 and the under side of the upper part of the main clamping member and ending in the recess 9 and inclosing both sides and outer edge of member 11 in the fabric. The outer half of the main binding member is next bent under and flattened against the under side of the fabric and becomes the under half in completing the operation of binding, as shown in Fig. It will be noted that the space 15 between the free edge 13 of member 11 and the turnedunder edge 1% of the main member is just stillicientto permit of thechangeof form and bring the vertical part 16 close against the corresponding part of the mattress fabric, as shown in the completed structure, Fig. 5. As the edge of the fabric to be bound is drawn into place the loose binding member 11 readily adjusts itself in position and assures a uniform pressure along the whole edge and takes up any unevenness when the last fold of the main binding-clamp is made. The area of the clamping-sur face is greatly increased without proportionately enlarging the dimensions of the binding-clamp by having the loose member inserted between the double fold of the fabric.

This form of binding-clamp secures the coils and strands woven into the fabric as a unit and prevents independent displacement when subjected to a strain.

In stretching the fabric on the bed-frame the clamps binding the respective ends of the mattress are rigidly secured to the end rails of the bed.

Fig. 6 is a modification in that the bottom fold 10 is of a single thickness instead of the double under wall shown in Figs. 4: and 5.

Having thus described my invention, what I claim is I 1. A binding-clamp of the class described,

' comprising a strip of metal having one edge member and adjustable therein with reference to conforming to the edge of the fabric being bound, substantially as and for the purpose set forth.

3. he combination with woven-wire fabric, of a binding-clamp, comprising a main member consisting of a strip of metal having one edge bent around to form a longitudinal recess the opposite edge being folded under, and a locking member consisting of a flat strip of metal loosely inserted in said recess and free to conform to and exert a uniform strain on the edge of the fabric in the operation of binding, substantially as and for the purpose set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN D. HAGGARD.

\Vitnesses:

L. B. (JOUPLAND, G. E. CHURCH. 

